Police said 25-year-old Justin Beaumont slipped into North County High School by following an employee in through a back door.

When inside, Beaumont asked about the school's security and talked about owning weapons and having a military background.

Investigators said he was not armed and made no threats, but officials were still alarmed, leading them to obtaining a warrant to search Beaumont's home.

Inside, detectives found a number of assault-style guns, a silencer, several magazines, as well as ammunition.

Those weapons have been seized pending his mental evaluation.

Beaumont is being held without bail at the Anne Arundel County Detention Center. He has been placed on the mental health docket, which allows the judge to review his case before trial to be certain he is receiving appropriate mental health care.